Machine for removing snow



Dec. 4, 1945. E. B. cAbwELL IACfiINE FOR hEMOVING SNOW Filed Feb. 25, 1942 6 Sheets-Sheet 1 liwamok B Edwin H Cbducll A'I'I'ORNEY Dec. 4, 1945. E. B. CADWELL 2,390,421

MACHINE FOR REMOVING SNOW INVENTOR Edwin B. Cadyell an v f 51:95. ATTORNEY Dec. 4, 1945. E. B DW L 2,390,421

MACHINE FOR REMOVING sunw Filed Feb. 25, 1942 6 Sheets-Shoot 3 ATTORNEY E. B. CADWELL 2,390,421 MACHINE FOR REMOVING SNOW Filed Feb. 25, 1942 s sneaks-sheet 4 INVENTOR .55 EdwzzzB (em well ATT RNEY Dec. 4, 1945-.

E. B. CADWELL MACHINE FOR REMOVING snow Filed Feb. 25, 194;

6 Sheets-Sheet 5 INVENTOR: Edwz'rzB ATTORNEY 1945. E. B. CADWELL v 2,390,421 MACHINE FOR REMOVING SNOW I Filed Feb. 25, 1942 6 Sheets-Sheet 6 INVENTOR 1 Edwm B (bdwcll BY Patented Dec. 4, 1945 Edwin B. Cadwel'l, LS'augerties, N. '36.; Helen Gadwell executrix "of said Edwin B. Cadwell, ideceased Application "February 25, 1942, Serial No. 432,274

This invention relates to the art of removing material in situ and relates more particularly to the art of removing snow from city streets, highways and airports, on which it'lies or is banked.

One of the principal objects of my invention is to provide a .machine for removing material such as culm orsnow lying'in "a bank, 'from the ground by slicing and gathering up directly from the mass a substantial portion of thesame and ;delivering-1t to "a place of deposit.

'A further object of. my invention is to provide a machine for progressively removing an upper portion o'fthe mass of snow by slicing it and gathering it up and simultaneously scraping and lifting the lowerremaining portion from its place, and delivering the combined product to a place of deposit.

A further object is to provide a machine for removing snow from the ground, having a projectonsaid projector "being advanced directly into "the snow-bank as it lies on the ground surface, for slicing and gathering up directly from the mass a substantial portion of the snow, instead of elevating it and 'forcing it through a funnel or by moving it with conveyors.

Another 'objectis to provide a machine having a 'curver'i scraper blade placed close to the rear "side of the projector for scraping a portion of the snowma'ss lying directly in contact with the road, and rolling it from the rear into a projector for delivery to a'place of deposit.

Another object is to 'providea machine that will workunder the most unfavorable conditions "of temperature-and regardless of the density and hardness of the snow to be removed.

Another object is to provide'a machine that will 'project the :snow at a considerable distance item the place of removalby its own .force.

Another object is to provide :a machine having means to discharge the removed snow into a vehicle travelling alongside the carrier of said one side of the first scraper blade and angiilarly Another object is to provide a machine that Another object is to provide a self-propelled vehicle carrying a machine on its {front or rear end or on the side thereof, for removing snow from the ground.

Another object is to provide a machine that p adjustable thereto for scraping a snow mass lying directly in contact with the road at one side of :the projector, and rolling it from the side into the projector.

Further objects and advantages of "the invention will be in part set forth in the following specification and in par-t will be obvious therefrom without being specifically pointed out, the

same being realized and attained as pointed out in the claims hereof. I

The most common method of "removing snow is by means of displacement plows. Such means are successful in pushing or rolling any kind of snow from the road surface into windrows pr hanks along the roadside, except that which very deep or very dense.

This method compacts the snow .and under usual temperature changes, it soonlbecornes very dense, the lower strata becoming ice and the other surfaces very hard. These windrows ifrequently obstruct traflic and must be removed.

Rotary, power driven removers are most efficient for this purpose.

Hereto'fore, "rotary snow removers have been built on the principle of gathering and bringlng the snow to the rotor-member which must be of relatively-small diameter, andfis usually shrouded in "the small end oi a forwardly projecting ztunnel shaped scoop, or by means of transverslypperated screw type conveyors. These methods :are

--successtril when working in 1ight, dry:snow.

The on method of operation lis toipush the "scoop or the screw conveyor into the :snow,

" gathering all in its path and forcing same iinto the rotating member. If the snow is dry "and light, much "power is not required, but-if the snow is dense andfrozen, which is its usualcondition, the operation entails the breaking up and tearing apart "of a relatively solid mass and then compacting it as it is forced into the rotor memher. This requires great power and traotive effort.

These rotor members aremostcommonly :constructed with fiat surfaced blades mounted nadially around a rotatable shaft all inclosed in a housing the front of which is open, also an opening in the periphery through which the snow is discharged.

' Snow is of varying consistency, ranging from light and dry, weighing approximately 200 lbs. to the cubic yard, through varying conditions of dampness and density, to a weight approximately that of "water, which is. over 1,600 lbs. per cubic yard.

Light, dry snow can be crowded through a funnel shaped scoop and into a rotary remover member, but damp snow will compact and plug the passage, reducing efficiency even to the vanishing point, depending on thecondition of this very unstable material.

and hard that even screw conveyors are ineffective, and it is necessary to break them up with power operated road grader blades and scarifiers, before the screw conveyors will perform their function.

My invention utilizes an improved method. I advance the'rotor member into the snow as it lies .on the road surface instead of elevating it and forcing; it through a funnel or by moving it wi'th conveyors. I thereby slice and gather up directlyfrom the mass a substantial portion of they snow, with the expenditure of much less power and' 'tractive effort and then scrape and roll the remaining snow into the path of the rotating member from the rear. I accomplish this by means of a curved scraper blade placed close to the rear face of the rotor member. The tractive effort required is thereby greatly reduced by reason of having first removed the upper strata of snow, and also because a curved blade is most eflicient in moving material.

Loading the rotor member from both front and rear permits the full loading of samejalso better compacting of the snow thereby further increaring efiiciency.

l 'lIo ,-implement this method, I have provided an apparatus which will compact and throw the snow to-either side to a considerable distance, or

into a windrow adjacent, or into a truck for rem'ote'disposal, only requiring the power furnished by; any, one of several makes of light truck enthe snow, operates like a boring mill cutter, ex-

cept that it both cuts and gathers its chips with itsfront, rear and peripheral faces.

a ,The. more densely the snow can be packed into the rotor member, the'less power is required to throw same a given distance; hence, I build these shovels in the form of deep scoops which facilitatesjcom'pression.

j When discharging snow into a truck body, care must be taken, otherwise it may be packed so hard it cant be dumped. Therefore, I provide means for changing the speed of the rotor member,enabling control of velocity of the snow stream.

apparatus can be carried on the front of a standard truck in manner similar to a displacement-plow or on a special chassis to be drawn or pushedby truck .or tractor.

With the above and other objects of the invention in View, the invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as

set forth in the claims hereof, certain embodiments of the same being illustrated in the accompanying drawings and described in the specification.

In the accompanying drawings which form part of my specification: a

Fig. 1 is an elevational view of the front of the machine mounted on a vehicle;

Fig. 2 is a side elevation of the same and showing the vehicle only in part, without showing a chute;

Fig. 3 is a top view of the same;

Fig. 4 is a rear View of the same, in elevation;

Fig. 5 is aside elevation of a modification in which the driving motor for the projector is mounted near, and adjustable in vertical position together with, the same; v, a

Fig. 6.is a peripherical section through the buckets two of them beingillustrated;

Fig. 7 is a cross section through a bucket taken along the line 11 of Fig. 6;

Fig. 8 is a top view of atruck of usuaLconstruction' carrying a projector and motor, the projector being located at Zone side thereof, the chute being not shown;

Fig. 9 is a side view of a modified embodiment of av chute;

Fig. 10 is a cross section of the connecting pieces taken along line l9 l0 of Fig. 9;

Fig. 11 is a side View similar to Fig. 9 showing a portion of the chute in another position; and

Fig. 12 is a side view of the chute, a portion of which is shown in a position different from the previous positions In the description of the drawings in which similar numerals designate similar parts throughout, a machine-frame I9 is connected to a frame lo of a vehicle, and is vertically adjustable with relation thereto. a

The connection between the vehicle-frame l0 and the machine-frame I9 is provided by substantially parallel levers 4 3 and 38 respectively, each lever being pivoted with one 'end to the frame [0 and with the other end to the frame 19 hoist 45, said hoist being secured to said. vehicleframe It]. AJreSiIient and adjustable connection between the'vehicle-frame l0 and the machineframe 19 is thus provided, for resiliently holding the elements carried byv said machine-frame ill in a predetermined and adjustable vertical position with relation to the ground on which the vehicle travels.

In the modification shown in Fig, 5, the u per lever 43 and therewith the frame i9 and the elements secured thereto comprising the motor 24, are held in resilient and adjustable position by means'of a combination comprising an air cylinder 55 and a piston coactive therewith, the vertical position of said frame I9 being determined by the relative position of the piston in said air cylinder 55 which is controlled bythe amount of air therein. a a r The frame 10 carries axles '[I which in turn carry running wheels l2. A revolvable projector onrotor I3 is secured to the machine-frame I 9 and consists of a rotatable shaft M; the axis of which is parallel to the longitudinal axis of the vehicle, and a plurality of scoop-shaped shovels or buckets If? radially mounted on said shaft l4 and tied together by links i6 near the outer periphery [1- formed by said buckets [5. These buckets are of U-shaped cross-section and are open on the topof the-outer peripherical circle f1, and are flaring outwardl near the forward edges 18, being rein-forced thereby reinforcing bars; 20 having cutting edges, said edges projecting sidew'ise-, suficientlyto form the outermost projections of" the rotor l3. Each link Hi ties together two of the buckets l5.

The forward end of each link it is threaded and protrudes into a pocket 2| through a hole rovided therein at the rear of each bucket I5 and is held in said pocket 2| by a nut 29; on its rear end the link [-6 is provided with a loop 22, said loop embracing a transversal cutting member 23o! said reinforcing bars 20, the edges of which form the outermost cylindrical periphery of said rotor [3 (see Figs; 6 and'l).

Together with said projector l3, blades 4! and 52, shoes 46, chutes 26 and 34, a plow member 39, and a wall plate 36 are mounted on said machinefrarne [9' and are vertically adjustable therewith relative to the vehicle-frame in and, therefore, to the vehicle itself.

A motor 24 iscarried by the vehicle-frame ID and drives the shaft M of said rotor f3 by means of a chain 25 or other suitable driving means.

In the modification shown in Fig. 5, the motor 24 is carriedby the machine-frame l-9' together with the other elements as listed above and is vertically adjustable together therewith.

Continuing the description of the embodiment shown in Figures 1 to 4, the chute 26, mounted on the machine-frame I9, is of U-shaped crosssection throughout its length, the lowest portion of said chute being located adjacent the periphery ll of said projector 13 andsubstantially on thelevelof the horizontal shaft l4 thereof; the chute 25 is open toward the projector 13 and with its lower portion surrounding the same in part, The chute is composed of a fixed portion and a plurality of articulated sections, said fixed portion being secured to the frame 19; the. position ofsaid articulated sections can be selectively adjusted by the operator of the machine, the adjustment being attained by a manually operable worm gear and a worm, 2'1, mounted on the fixed portion of said chute, the axis of rotation of said wormgear coinciding with the axis of pivot besaid fixed section and an articulated section 28. A shaft 29 and two universal joints 29 at both ends thereof connect said worm with a handwheel placed at a distance from said worm gearon the frame l9. Thereb the section 28 and with it a section 3!} which is adjustably hinged thereto may be thrown into the position shown in broken lines in Fig. 4, or into any position therein between. The section 30 can be adj'usted in its position relative to the section 28 bymeansof a handwheel 32 secured to the hinge connecting the two sections; The lowest section 33 embracing in part the projector as pointed out and as indicated in Fig. 1, is hinged to the section fixed to the machine-frame l9 and may be swung upward into a vertical position shown in broken lines and adjusted in that position similar to the adjustment between the sections 28 and 3t,

tliereby forming a connection to a second chute 34. Said chute- 30 is also of U-shaped: cross-section, the operilsi'de of which, however, is opposite the side Qn'twhichthe-projector" I3 is located.

Said chute 3'4 ispivotally connected to the machine-frame H at 3'5 and the angular position thereofrelati-ve thereto is adjustable by means similar to the means employed in adjusting the sections 28 and 30 of the chute 26 relative to each other, or by othersuitable means.

A curved scraper blade 4! or mould board: is rigidly connectedto the machine-frame l9 and placed adjacent the rear side of the projector l3 and facing it with its concave side, and Provided near its lower end with a pivot 31 for connection to thelower lever, 38. V

A curved gathering blade 52 (Fig. 3), hinged at 5-3 to oneside of the blade H, and connected to the frame- I 9 by a link .54 is provided to gather snow that may be in its path androll the same near and intothe cylindrical periphery of the projector from the side l plurality of shoes- 46 are'sliding on the ground and are hinged to the scraper blade 41 near the lower edge thereof, and are also hinged to a threaded rod 41 reaching into and adjustably held by a rec'ei'vingmember 48 which member is rigidly secured to the blade 4!. The adjustment between the receiver 48 and the rod 41 is attained by means of two threaded nuts 50. This mechanism comprising the shoes 46 is pruvided for the support of the blade H and thereby also of the machine-frame [9;

A wall 36 is secured to the machine-frame I-9 and extends downward to thebottom of the blade 4|. 7

The plow member 39 is mounted on. the machine-frame i9, adjacent the outside of said projector i3 and projecting forward therefrom, extending downwardto the level of the shaft I4 and upward therefrom beyond the highest point of said machine-frameiii, for slicing and rolling the part of the snow bank above the axis: of the rotor into-the path thereof, as the vehicle travels forward;

The operation of my invention has in part been set forth in the preceding descriptionand maybe readily understood by those skilled in the art without describing it in further detail, and only a few additional explanations in the following are deemed necessary to complete the informationon the subject of operation:

The two chute 2t and 34- respectively, are adaptedto receive the snow masses gathered by the rotor and to deposit said masses at a selected place. The snow is sliced from the mass lying on the ground by the cutting edges of the bars 20, and by the transversal cutting members 23 of the rotor.v l3; the product thereafter is collected by the buckets Iiiand by centrifugal power is forced out of the buckets and into the chute 26 with such a speed that it will move rapidly through that chute and leave-the same in a direction determined by the position of the last'sectionthereof. g

While the snow is slicedfrom the mass, the curved scraper blade 4I- scrapes and rolls the snow remaining on the ground below the projector l 3 into the-path of the same from the rear; this scraping takes place along a line at a distance behind the slicing, substantially equaling the depth of the rotor, with relation to the travjelling movement of the vehicle; Simultaneously, the gathering blade 52gathers any snow that may be inits path and rolls the same'into the projector 13 from the side, sowthat the projector will receive the snow radially and slice it with the transversal cutting members 23. The section 28 of said chute 26, may be moved into the position shown in Fig, 4 in broken lines, thereby permitting the snow to continue to fly in the direction of the fixed section after leaving the same. By this arrangement the product may be thrown into the open air. In the usual position of the sections of the chute 26, as shown in Fig. l, the snow may be deposited in a truck or railroad car moving alongside the vehicle comprising the machine.

. When the lower section 33 of the chute 26 is swung and held upward by means h'ereinabove described, the product will travel straight upward along the wall 36 instead of moving up the chute 26, and will follow the channel of the chute 34 and will be directed to the opposite side of the vehicle than by using the chute 26. Following.

the adjustment of the position of the chute 34 the snow may be thrown into an open space or into a truck travelling alongside the vehicle comprising the machine. The hoist 45 and the air cylinder 55 respectively, serve to adjust and hold resiliently the position of the rotor I3 and the curved blades M and 52 in relation to the ground, and the adjustment maybe made by the operator in accordance with the conditions of density of snow or of hardnessof the road.

The shoes-46 supporting the curved blade 4| aid to serve the purpose to prevent the scraper blade from cutting into the ground itself by lifting and lowering it according to the unevenness of the ground surface while sliding thereon.

In the embodiment shown in Figs. 9-12 inclusive, the chute 26 comprise a fixed section and two articulated sections 28 and 30, and the position of said articulated sections may be changed with relation to the fixed portion of the chute by for depositing it in a place near the machine and allowing the snow to travel only a short distance from the machine. This position of the chute will be used for depositing the snow into the body of a truck travelling alongside the vehicle carrying the machine.

' Fig. 4, and, furthermore, shown in Fig. 11:

After detaching the bolt fiz from the two telescoping tubes iii and 62, respectively, the operator will swing the sections 28 and 30 into the position shown in Fig. 11. The two tubes will still telescope in this position. The snow to be discharged will leave the chute in the direction of the fixed portion thereof and, owing to the great discharge-speed, will travel a considerable distance from the machine.

I do not limit myself to the particular details of construction set forth in the foregoing specification and illustrated in the accompanying drawings, as the same refer to and set forth onlycertain embodiments of the invention and it is obvious that the same may be modified, within the means of a worm and worm gear, 21. as heretofore described, or by any other suitable means controlled by the operator of the machine.

It is desirable to determine with a single control means the direction of ejection of the snow masses from the chute to enable the operator to control the distance and direction in which the snow masses shall be deposited, by turning a single wheel only.

In this modification simple means are employed to attain this desired end; by raising the articulated section adjacent the fixed portion of the chute the other articulated section, which constitutes also the termination of the whole chute, is turned downward, and vice versa,

In carrying this modification into eflect I provide two tubes 5! and 62, respectively, which telescope into each other, each of said tubes being pivoted at its end to a different section of the chute; the tube Bl has a greater diameter than the tube 62, and is pivoted to the outside of the articulated section 30 at the pivot point 60. The tube 62 is pivoted at the pivot point 65 to the outside of the fixed portion of the chute. The open end of the tube 62 telescopes into the open end of the tube 5| and may be secured in this position by means of a threaded bolt 63, carrying a fsection'iiflland the fixed portion of the chute 26.

scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to be secured by Letters Patent, is as follows:

1. A machine for removing material such a snow lying in a bank on the ground, said machine, being mounted on a vehicle, comprising, in combination, a frame, a motor carried thereby, a machine-frame supported with relation to said frame, a revolving projector driven by said motor and mounted on said machine-framein position to be moved axially into said material by forward motion of the vehicle, said projector being adapted to slice the material from said bank, and a blade connected with relation to said machine-frame located near the rear of said projector, adapted to lift and to convey material from the ground from the rear into the projector as the vehicle travels forward.

2. A machine for removing material in situ such as snow lying in a bank on the ground, said machine, being mounted on a vehicle, comprising, in combination, a frame, a motor carried thereby, a machine-frame'supported with relation to said frame, a revolving projector mounted on said machine-frame and driven by said motor, said projector being adapted to slice the material from said bank, the axis of rotation of said projector being parallel to. the longitudinal axis of. said vehicle, and a blade connected with relation to said machine-frame located near the rear of said projector adapted to lift and to convey material from the ground from behind into the projector as the vehicle travels forward.

machine-frameand driven by said motor, .said

iprojectoribeing'adapted'to slice the material from saidrbank, land ta blade :connected with relation to'saidrmaohine-fra-me ilocated near the rear of :said 'projector, adapted tolift and to convey mam iterial fm'mtthe ground from behind into the projector as ithewehicle travels forward.

, ..4.JA machine for :removing material in situ such as snowllying in aibank on :the ground,said machinegbeing mounted on':a vehicle comprising,

in combination, a frame. a motor carried thereby, a machine-frame supported with relation to said "trarrle, ea revolving lprojec'tor mounted on said machine-frame and driven :by said motor, said projector com-prising a rotatable shaft .and a bucket carried thereby, "the outer ;periphery of rotation oi said bucket being :located near the surlace Eof the ground on which the vehicle travels, saidbuckeh comprising means adapted to slice the material to be removed, and a blade connected with Irelation to said machine-frame :locatednear the arear :of said projector, adapted "to "Ilitt and to :convey :material from the ground from beh nd into the projector as theuvehicle travels forward.

55A machine efor iremoving material in situ such as snow llying dn albank unit-he ground, said machinegbeing mountedconza vehicle, comprising, incombination, atrameaamotor carried thereby,

' a machinefr ame supported with relation {to i said frame, a revolving projector mounted ;-on said machine-frame and driven :by said motor. said projector-comprising a shaft and a plurality of =bucketscarried bysaid shaft and arranged in a circle :and lin'ked to each other :near the outer periphery of -said circle, :said periphery being lo- *cated near thesurface of the ground on-which the'vehic'le travels, said bucketscomprisingimeans formed to slice the material ?to be :removed, and

a blade connected with irelat'ion rto: said 'machineframe located near the rear of said projector, adapted 'to lift andto -convey material from the ground from behind into the projector as the vehicle travels forward.

6. The combination with a vehicle, of a machine for removing material in situ such as snow which is banked on the ground, comprising, in combination, a power driven revolving projector adapted to slice and collect the material to be removed, and a blade located near the rear of said projector adapted to lift and to convey material from the ground from beh nd into the rear of the projector as the vehicle travels forward.

7. A machine for removing snow comprising a vehicular support, a frame mounted on the forwardend of the support, means for adjusting the frame vertically with respect to the support, sa d frame carrying a rotor adapted to be propelled in direct engagement with snow for removal, the rotor having its axis of rotation in the frame vertically withrespect to the support, a blade'extending .heightwise of the frameand having its cutting edge forwardly disposed,,said

i frameicarryingarotor adapted to be propelled in direct engagement with snow for removal, the

rotor ,havingits axis of rotation in fixed relation to the frame parallel to the direction of movement of the machine, a point on theperiphery of the rotor-being in close adjacence to said blade,

motor means for driving the rotor, and a curved blade extending transversely of the, machine rearwardly of and below the rotor, where-by .snow

lying on ,and'adjacent the .ground is delivered into the rear of the rotor.

9. ,In a snow removing machine, the combination ofqa-rotary proj ector, means for .mo'vingsaid projector axially into a snow mass, means for rotating said projector as it is moved axially forward .to slice..snow ,from an upper portion of the mass and project it toward aplace ,of ,de-

7 posit, anda curved blade positioned adjacent the rear side of the projector and extending transversely of the axis thereof to remove snow lying on and adjacent the ground and .deliver it .into the projector from the rear. I

.10. ,In.a snow-removing machine, the, combination with ,a vehicle, of a supporting ,frame, a. rotary ,projector carried by saidframe and p051- tionedfor axialmovement into .thesnow mass by forward motion of the vehicle, means for rotating said projector, .a curved blade, extending transversely of the axis of "the projector and positioned rearwardly of and closely adjacent the projector, .toremove snow lying on and adjacent the.groundanddeliverit ,into the projector from :into direct engagement with snow to beremoved,

said rotor having its axis of .rotation in fixed relation .to said :frame, motor means for driving the rotor and *a curved blade extending transversely of the axis of the rotor and positioned rearwardly of and lower than the rotor to remove snow lying on and adjacent the ground and deliver it into the rotor from the rear.

12. In a machine for removing material in situ, such as snow lying in a bank on the ground, the combination w th a vehicle, of a revolving projector carried thereby and adapted to slice the material from a bank, means to revolve the projector, and a blade carried by the vehicle and disposed proximate the rear of the projector and shaped to lift and convey material from the ground forwardly into the rear of the revolving projector.

13. In a machine for removing material in situ, such as snow lying in a bank on the ground, the combination with a vehicle, of a revolving projector carried thereby and adapted to slice the material from a bank, means to revolve the projector, -a blade disposed proximate the rear of the projector and adapted to lift and convey material from the ground forwardly into the rear of the revolving projector, a shoe and means to support the blade from the shoe at a predetermined elevation above the ground.

14. In a machine for removing material in situ, such as snow lying in a bank on the ground, the combination with a vehicle, of a revolving justably support the blade from the shoe at a predetermined elevation above the ground.

15. In a machine for removing material in situ, such as snow lying in a bank on the ground,

. the combination with a vehicle, of a revolving projector carried by the vehicle and adapted to slice the material from a bank, means to revolve the projector, a blade disposed proximate the rear of the projector and adapted to lift and convey material from the ground into the rear of the revolving projector and a blade carried by the vehicle and adapted to gather snow and direct the same proximate and into the periphery of the j projector.

V. 16. In-a maclvine for removing material in, .situ, such as snow lying in a bank on the ground,

the. combination witha vehicle, of a revolving projector carried by the vehicle and adapted to slice the material from a bank means to revolve the projector, a curved blade disposed proximate the. rear of the projector and adapted to lift and ,convey material from the'ground into the rear of the revolving projectorand a curved blade carried by, the vehicle proximate the periphery of, the. projector and adapted to gather snow and directthe same proximate and into the periphery of the projector.

H17. In a machine for removing material in @situ, such as snowlying ina bank on the ground, the, combinat on with a vehicle, of a revolving projector carried b the vehicle and adapted to slice thematerial from a bank and a curved 1 blade carried by the vehicle and disposed proximatelthe rear of the projector and adapted to lift and convey material from the ground into I tl1e rear of the revolving projector.

.18. In a'machine for removing material in situ, such assnow lyingin a bank on the ground, the combination with a' vehicle, of a revolving projectorcarried by. the vehicle and adapted to 1 slice the material from a bank and a blade carried by the vehicle and disposed proximate the rear of the projector and whereof the bottom edge is disposed forwardly of the rear marginal plane of the project0r, said blade being adapted to lift and convey material from the ground into the rear of the revolving projector.

19. In a machine for removing material in situ, such as snow lying in a bank on the ground, the combination with a vehicle, of a revolving projector carried by the vehicle and adapted to slice the material from a bank and a downwardly and forwardly curved blade carried by the vehicle and disposed proximate the rear ofthe projector and adapted to lift and conve material from the ground into the rear of the revolvin'g projector.

20. In a machine for removing material in situ, such as snow lying in a bank on the ground, the combination with a'vehicle, of a revolving projector carried by the vehicle and adapted to slice the material from a bank and a blade operatively connected with the vehicle and disposed proximate the rear of the projector and whereof the bottom edge is downwardly and forwardly curved and is disposed forwardly of the rear marginal plane of the projector, said blade being adapted to lift and convey material from the ground into the rear of the revolving projector.

21. A machine for removing snow comprising a vehicular support, a frame mounted on the forward end of the support, means for adjusting the frame vertically with respect to the support, said frame carrying a rotor adapted to be propelled in direct engagement with snow for removal, a generally upwardly extending blade having its cutting edge laterall of and forwardly of the rotor and thereabove, the rotor having its axis of rotation in fixed relation to the frame and parallel to the direction of movement of the machine, motor means-for driving the rotor, and a curved blade extending transversely of the machine rearwardly of and below the rotor, whereby snow lying on and adjacent the ground is delivered into the rear of the rotor.

EDWIN B. CADWELL. 

